It also quite depends on environment. When you try to think about something, the observer may think that you are just being lazy and doing nothing. I can't count how many times I've been told by parents or other people that used to be close that I should do some work rather than just sit and stare at the wall. And I would have some really great ideas of how to make something or how to solve something. Then those people would say - you are just stupid, you can't do this and that. I can imagine many people will try to shun such thoughts and associate it with something unpleasant. As I did for many years. This may sound brutal, but only when I cut contact with every single person that was negatively affecting my creativity in the past and present I stopped being depressed (not completely, sometimes it's coming back), but also started getting successes at work and eventually I was able to start doing things on my own. Some people don't realise how toxic they are and there isn't even point talking to them about that, because you are going to get ridiculed and attacked.